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Linux Magazine: Linux Clustering in Depth

"Why you need clustering, what benefits it provides, and how to
set it up."

"Some problems are just hard to solve. If your job requirements
include things like predicting the weather or simulating nuclear
blasts without actually launching any warheads, then your problems
fit neatly into this category."

"Or, maybe you have more practical concerns. Maybe you are
running a Web-based business that receives millions of hits per
day, and it's your job to make sure that your server response times
stay lightening fast."

"Of course, making sure that your company's mission-critical
applications are available 100 percent of the time is just as
important as insuring a snappy Web server response to your
customers..."

"If any of these situations apply to you, a cluster of Linux
computers might just be the answer to your prayers."

"But what exactly is a cluster, and why would you want to set
one up? What are the potential benefits and pitfalls of deploying a
Linux cluster?"